This electrified contraption keeps the light on in the restaurant bathroom. That is, until you flush the toilet. Then the hoop falls, the sphere swings out in a wide parabola on the twisted wire while you wash your hands, and then hits the button on the air dryer just in time for you to dry them underneath, blowing the line of toilet roll tubes over, which activates the spring-loaded winch, that lifts the doorstop on a rope and turns the doorknob to open the door for you. It's the newest Rube Goldberg automated bathroom attendant service.

10.10.20